Mattawa, Washington Weather
Pikas hayfeeding in granite peaks. Day 77 of spring. Read this microseason across nine climate regions →
Mattawa weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Overcast28%—80°57°—
- ThursdayJun 4Overcast——79°55°-1°
- FridayJun 5Overcast——74°51°-5°
- SaturdayJun 6Overcast——69°50°-5°
- SundayJun 7Overcast——73°48°+4°
- MondayJun 8Heavy Drizzle16%0.07″65°55°-8°
- TuesdayJun 9Overcast14%—70°54°+5°
PM2.5 at 8.4 µg/m³, PM10 at 10.4 µg/m³ — typical background levels with no transport signature. AQI up 6 over the last 6 hours (gradual rise).
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 43 now. With UV 0.0 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 10 by mid-afternoon.
- Present
- AQI 43
- UV peak
- 0.0 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 10
PM × Wind × Precip
PM2.5 at 8.4 µg/m³, PM10 at 10.4 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.81
- Wind
- breezy
- Recent rain
- 0h in last 6h
- Pattern
- background
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 6:56 AM
- Moonset
- 3:43 PM
- In sign
- ♑︎ Capricorn
Pikas hayfeeding in granite peaks
Mattawa at a glance
- Today vs. normal: 66°F — typical for the season
- Last frost: May 26 (climatological average for this latitude)
- Microseason: Jun 1–5
- Planting window: Harvest spring lettuce before it bolts. Sow heat-tolerant greens.
Right now in the garden
Warm-season window is open
As of June 4, the last spring frost has passed for most years. Transplant tomatoes, peppers, eggplants, basil, and cucurbits (cucumbers, squash, melons) now. Direct-sow beans and corn into warm soil.